A new method for fatigue study of reinforced concrete structures based on piezomagnetism

被引：0
|
作者：
Jin W. [1 ,2 ]
Zhang J. [1 ]
Chen C. [1 ]
Mao J. [2 ]
Cui L. [2 ]
机构：
[1] Institute of Structural Engineering, Zhejiang University, Hangzhou
[2] Ningbo Institute of Technology, Zhejiang University, Ningbo
来源：
| 1600年 / Science Press卷 / 37期
关键词：
Fatigue; Force-magnetic relation; Piezomagnetism; Reinforced concrete structure;
D O I：
10.14006/j.jzjgxb.2016.04.018
中图分类号：
学科分类号：
摘要：
This paper reviews existing researching methods for fatigue and their deficiencies, and then introduces a new method based on piezomagnetism and its advantages. The piezomagnetism effect is combined with the fatigue of RC structures innovatively. Through establishing suitable force-magnetic relation models for steel bars and the interface of RC and recording the evolution of magnetic field, the mechanism of fatigue failure can be analyzed and the criteria for fatigue failure which can be used for fatigue life prediction can be established. Lastly, the effectiveness and advantages of this method are demonstrated. The magnetic signal is sensitive to fatigue and the piezomagnetism hysteretic loops contain much information on fatigue. Magnetic probes are in the vicinity of the concrete surface which can be developed as one kind of nondestructive testing methods. This method can also track the damage of RC beams and provide an intuitive basis for its health status. © 2016, Editorial Office of Journal of Building Structures. All right reserved.
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页码：133 / 142
页数：9
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